What structure of the lung is primarily responsible for controlling volume of air flow during respiration?

Which of the following lists of airway structures is in order from largest to smallest?

How many lobes total are there in the human lungs?

What is the name for the topmost part of the lung?

What are the two types of alveolar cells?

How do bronchioles respond to an increase in the partial pressure of carbon dioxide in the alveoli?

The major alveolar cell type, making up 95% of alveolar cells, is type I. Only 5% of alveolar cells are type II, yet they serve a vital function in respiratory physiology. What is the function of type II alveolar cells?

In the average adult, how much air remains in the dead space of the lung after normal expiration?

What nerve innervates the diaphragm (necessary for normal inhalation)?

What is the average volume of air breathed into and out of the respiratory system during tidal breathing?